Sheet metal radiator



Sept. 22, 1931.

G. l` STANFORD SHEET METAL RADIATOR Filed Jan, 31, 195o Patented Sept. 22, 1931 UNiTED STATE s PATENT OFFICE s GEORGE I. sTANEORD, or `MILFORD, CONNECTICUT, AssIGNoR To THE UNIVERSAL PIRE AND RADIATOR COMPANY', or NEW YORK, N. Y., A CORPORATION. or

MARYLAND SHEET METAL RADIATOR Application led January 31, 1930. Serial No. 424,842.

This invention relates to steam or other radiators which as ordinarily constructed for heating the interior of buildings are made of cast metal. The object ofthe invention in general is to make it possiblerto use sheet metal in the construction of the radiator in such manner as to secure the advantages of cheapness, small Weight, high radiating eifect with a comparatively small size of radiator and other advantages which Will be apparent to those skilled in the art from the following'description.

The invention relates more particularly to certain improvements in the-construction of a radiator comprising a relatively large and unobstructed heat or steam chamber made up of sheet metal which may have flat or plane frontV and rear Wallscombined With exterior members of corrugated sheet metal secured to one or both of said Walls and having plane surfaces atfthe elbows or bends thereof fastened directly againstthe surfaces of the Walls in heat conducting relation thereto, said member or members being applied in position such that the axes of the corrugations extend vertically over the Walls of the sheet metal steam chamber and to pro-- vide vertical sheet metal ducts Which confine the air and induce circulation vertically from the bottom tothe top thereof, thereby conducing to the eicient absorption `of heat from the chamber and rapid heating of the air thus caused to circulate naturally through said vertical ducts. In carrying out the invention it is proposed to employ by preference aluminum or other non-rustable metal, although ordinarysheet steel or sheet iron may be used, and provided with a suitable surface finish.

One of the objects of the invention is to provide a simple and cheap construction of steam chamber Which Will contain a substantial quantity of steam andv'permit the Vsame to pass readily through the chamber mains in the chamber.

` and to combine with this chamber an effective heat absorbing constructionvvhich Will rapidly absorb the heat from the steam or vapor during the brief `time A further Object of the invention is to obber.

the steam re-f tain in a radiator constructed from sheet metal in the manner hereinbefore set forth a highly ornamental effect together with strength due to the manner of construction and vvith an added heat-radiating kcapacity thus Vpermitting the use of light sheet metal with attendant cheapness in the manufacture ofthe radiator.

This part of the invention consistsinprovidingv a multiplicity of horizontal strengthening strips of metal spaced apart and crossing the corrugations horizontally and welded or otherwise secured in direct contact to the exterior bends of the corrugated member and which, While adding to Vthe ornamental appearance, also conduce to rapid and eilicient radiation of the heat of the contents of the chambercontaining the steam or other heat medium. l

The invention' consists further in the details of construction and combination of parts hereinafter more particularly described and then specified in the claims. r

Fig. 1 is a perspective View of one form of the radiator embodying the invention.

Fig. 2 is a vertical section through the same on the-line 2 2 of Fig. l. f

Fig. 3 is a perspective view Vof a part of one of the'end portions of the radiator cham-` The body of the radiator is shown as formed of sheet metal and includes the fronty Wall l, the rear Wall l', the top Wall 2, and bottom VWall 2k of an upright steam chamber a. This sheet metal body can be conveniently made by bending up a piece of sheet metal of the proper length into the form required and lapping its free ends `as indicated at 3, Fig. 2, vvhere'said ends are fastened orse-Vv cured together in any suitable Way so that the chamber Will be air or steam-tight at this point. To complete the steam chamber, the end members 4 are employed, these members being indicated in perspective in Fig.l 3. The end members 4- may be formed so that they can be inserted into the body and can be secured therein bythe lianges 4 'in -a suitablevv steam and air-tight joint. They mightjbe ,made in other forms to'coi'nplete'V the. steam chamber. Eachkof them lis pro# soI Q may be fastened. i the sheet metal steam chamber.

vided with the usual outlet or tittingF as shown in Fig. l. y

Secured in Yvertical position against the front wall l is a corrugated member 5 which may be made of thin sheet metal. rlhe'bends or elbows 5 between the projecting members of said corrugated member aremade of such shape that they will lie dat against thesurface of the wall and thereby efficiently absorb heat by conduction from. said Ywall. it is preferred to weld the ilat surface 5 at intervals, as at 9, to the wall of the steam chamber so that the heat will be more readily conducted frompthe steamV chamber to the heatradiating members or varies. lt will be obvious however. that they may be soldered, welded or otherwise fastened in position. The whole corrugated member is disposed as shown with the axes of the corrugations in Y vertical position. rlhe corrugations form in f eifect a series of hcat-radiating fins or vanes.

YBy this disposition .it will be seen that closed vertical air ducts are provided upon the facefof the front'member l and that a forced natural circulationrof airwill take place from the bottom'througheach of said ducts and out of the top and in sodoing the air will takeup heat not only from the side portions of the corrugations which acquire heat through theflattenedcpart 5 but also from the portion of the front wall of the steam chamber which forms the inner wall of the air ducts.

If desired al similar corrugated member against the .rear wall'l of lf the installatien will permit I prefer to employ the corrugated vmember, disposed. as described, to both front; and rear walls in order to set cure the` greatest radiating eiiiciency but my invention is particularly g applicable where Y only one wall of the radiator will be exposed.

in which case the surface members will be omitted from the wall not available and the heat concentrated on the other wall.

Secured in horizontal position and extending transversely across the outer elbows or bends of the corrugated member are metal strips 7. As manyofthese may be employed as desired. They are also preferably made of sheet metaland may be welded at all or portion of the points of engagement of the strips against the outer edge of the inembers 5. hen so employed the members 7 soi have the function not only of adding tothe appearance f the radiator but of assisting in radiating heat'conducted from a wall of the Ychamber through the sides ofeach corru-y gated portion of the corrugated Vmember and of increasing the strength ofl the radiator by supporting the outer edges of the members 5.

TheV upper longitudinal member 7 may extend'over the end ofthe corrugated member `and be securedto the edges of said corrugated sheet by welding or otherwise to further strengthen the structure of the radiator. rlhis is particularly desirable inasmuch as it permits vthe use of a very light gage of sheet metal for the corrugated member thereby lessening greatly the cost of material.

rThe transversely extending portion 7 of the upper strip 7 may be extended over into Contact with the upper wallQ Aof the steam chamber and be fastened thereto for adding to the strength and further assisting' in the' conduction and radiationV of heat. The transverse portion 7 of said upper member 7, when this particular form of member '4' is employed, is provided with openings as shown to permit the egress of the air passing upwardly through the air ducts and heated in its passage as set forth.

The bottom strip 8 may be similarly constructed as a reinforcingv member extending along the outer face of the lower edge of the sheet metalmember and extending inwardly beneath member as illustrated. lt is preferable tliat this member should extend only a slight distance over said free edge in yorder that air mayv enter freelyat the bottom and circulate up through the ducts l and the spaces between the'projected portions of the corrugated einber. n y

Any suitable support Vmay be employed for supporting the radiator above the iioor so thatgair shall have free access to the lower ends ofthe ducts.; For example the lower strips 8 may each be formed with a series of spaced tingers extending downwardly and struck 'out from the metal of the members `8 for supporting the radiator. I

' By the use of my Yinvention the radiator may be madefentirely of sheet metal and a high 'degreejof 'radiating' eli'ect secured vby reason of the construction of the elements and their relation to one another as already described. l rlhe relatively large and open steam or vapor chamber will offer little obstruction to the passage of steam therethrough and the surface constructionv will rapidly absorb the cheapness and of comparatively small dimensions maybe produced as compared tothe usual cast metal'radiators. Y Y .l `What I claim as my inyention is: v

l. A radiator comprising a `heatradiating chamber made up of a pie` 'cefofV sheet metal bent to provide a bottonn'top, front and rear wall, the ends of the metal sheet being lapped `and joined in the top wall and said chamber being complet-ed by flanged endinembers se-. cured by their ilanges 1n Vthe openings in the bent portion and furnishedwith the usual outlets or fixtures, allcogmbinedwith a corrugated sheet metal memberfastened at theY elbows or bends thereof directly against the; front ofthesheet metal chamber and aifording, by the vertical disposition of the axes of the corrugations, air Aducts for circulation of' the air in a vertical direction in contact with the corrugations and with the Wall of the chamber.

2. A radiator comprising a heat or lsteam chamber constructed from sheet metal, heat-- radiating corrugated sheet metal formed with Hattened faces secured directly against the outer surface of the sheet metal body, combined with a multiplicity of cross strips of sheet metal spaced apart and suitably fastened across the outer bends of the corrugated member to permit the use of exceedingly Y v light gage sheet metal for said corrugated member,the upper one of said strips including a portion turninginwardly and secured directly to the edge of said corrugated sheet metal member to secure further rigidity.

3. A radiator comprising a heat o-r steam chamber constructed from sheet metal, heatradiating corrugated sheet metal formed With iattened faces secured directly against the outer surface of the sheet metal body, combined with cross strips of sheet metal suitably fastened across the outer bends of the corrugated member to permit the use of light gage sheet metal for said corrugated member, an end one of said crossing strips turning inwardly and being continued across the edge of the corr'ugations to connect with lie upper wall of the sheet metal steam cham-v er. v

Signed'at New York in the county of New York and State of New York this 29th day of JanuaryyA. D. 1930. GEORGE I. STANFORD.

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